This thread states the current "Limit Theory Feature List" as we currently understand it: What will be in the game, what might be in the game, and what won't be in the game. This should help answer many questions on what will be in LT, and what's getting trimmed. Comments, questions, and discussion should go in the LT Feature List Discussion Thread.

This list is 100% official; everything here is direct from Josh.
(Even though I'm the one organizing it.)

Note: Contents are subject to change. I'll keep this updated as necessary.
This list is up-to-date as of May 24th, 2018.Colored entries represent items that were promised at or during the Kickstarter.Will be in Limit Theory 1.0:

Technical:

Windows support

Linux support

Super hi-res display settings

Joystick and controller support

VR support

Powerful modding capabilities

Advanced game customization controls

Release on Steam

Release on GOG

Core game:

Dynamic lighting

Music and sound (some sound optional for those that want silent space)